Nancy Friedrich

Microwaves & RF

Nancy Friedrich began her career in technical publishing in 1998. After a stint with sister publication Electronic Design as Chief Copy Editor, Nancy worked as Managing Editor of Embedded Systems Development. She then became a Technology Editor at Wireless Systems Design, an offshoot of Microwaves & RF. Nancy has called the microwave space “home” since 2005.

VNA Options Enhance Amplifier Measurements
Characterizing a high-frequency amplifier can be rather tricky. In fact, just configuring a network analyzer for the right set of measurements can be challenging. To ease this process, Rohde & Schwarz (Hants, United Kingdom) offers a 17page-long ...
Hawaii Gets A Thumbs Up After All
Rather than being a black mark on MTT-S, the Honolulu location might have actually been a blessing.
Vector And Spectrum Analyzers Merge
To perform their jobs, RF engineers often rely on both spectrum analyzers and vector network analyzers (VNAs). To make it easier for designers to leverage these instruments, the ZVL series merges a full-featured VNA with a spectrum analyzer in ...
RF Immunity Testing Helps To Maintain Quality Performance
Unwanted signals are proliferating in part because of the popularity of GSM cell phones. Such RF signals can disrupt the operation of electronic circuits without adequate RF noise-rejection capabilities. To guarantee the satisfactory operation ...
Portable Handheld Analyzers Span 2 To 1600 MHz
Interoperability continues to be a problem for homeland-security, public-safety, and other agencies. To assuage this problem, the S311D/S312D Site Master cable and antenna analyzers combine a frequency of 2 to 1600 MHz in a portable, rugged ...
Microstrip Patch Antenna Populates CPW Stub With MEMS Capacitors
Using radio-frequency microelectromechanical-systems (MEMS) technology, a tunable frequency microstrip patch antenna has been developed. It consists of a patch antenna loaded with a coplanar-waveguide (CPW) loading section, which is attached to ...
Software Eases Design Pain At Various Stages
Although simulation remains essential, many software platforms offer an increasing number of capabilities for specific RF design problems and challenges.
Microwaves Determine Pregnancy Through Urine Analysis
Shortly after conception, the human chorionic gonadotropin (hCG) glycoprotein hormone is secreted by the developing placenta. During early gestational growth, hCG rises in concentration. As a result, hCH is an excellent marker for the early ...
UWB LNA Achieves Maximum Gain Of 13.5 dB From 1.85 To 10.2 GHz
Many researchers are evaluating Ultra Wideband's (UWB's) applicability for short-range, high-speed wireless communications. Yet these systems must first overcome a challenging building block: the low-noise amplifier (LNA). A UWB LNA was recently ...
Double-Balanced Wideband Mixers Cover 0.7 To 10 GHz
To satisfy GPS, telecommunication, radar, EW, and instrumentation applications, a family of wideband, double-balanced mixers has emerged. The monolithic-microwave integrated circuits (MMICs) cover the 0.7-to-10-GHz band. The CGY2180UH, CGY2181UH, and ...
MIMO System Achieves 108-Mb/s Data Rate Using 16-MHz Channel
Higher data rates can be achieved by using wider RF bandwidths. Yet those bandwidths reduce the number of users that can simultaneously be connected to the network. A number of technologies have emerged to resolve this issue. Recently, a fully integrated ...
5-V InGaP/GaAs Amplifiers Satisfy Broadband RF And IF
The quick evolution of next-generation communications is making system requirements increasingly complicated. The WJA broadband amplifier family was designed to exceed those requirements. The devices offer up to 20 dB of gain and output third-order ...
Microstrip Circulator Topology Boasts Rectangular Ferrite Region
Typical junction circulators are composed of ferrite material—usually circular, hexagonal, or triangular in shape—surrounded by a uniform dielectric. Microstrip traces are then patterned on top with ports emanating at equal intervals in the azimuthal ...
Fractal Electrodynamics Improves Kokh Antenna Bandwidth
In fractal electrodynamics, fractal geometry is combined with electromagnetic theory in order to investigate a new class of radiation, propagation, and scattering problems. When fractals are applied to antenna elements, the result is smaller resonant ...
Innovations Lead To Multi-Pronged Homeland Defense
To stay a step ahead of any threat, RF products and communications are securing points of entry, ports, airlines, and any other vulnerable spot.

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